/* Layout: an instrument panel. Two columns of dark modules on a charcoal ground; the
   waveform compare spans the full width. Single dark theme, chosen for the subject. */
:root {
  --bg: #15171c; --panel: #1d2027; --panel2: #14161b; --edge: #2c3040; --fg: #e7e9ef; --muted: #8e97ab;
  --accent: #78e08f; --accent-2: #f2b46a; --orig: #8f99ad; --key: #f1f2f5; --key-black: #262a33; --danger: #ff7b72;
  --display: "Silkscreen", "IBM Plex Mono", monospace;
  --body: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--fg); font: 14px/1.45 var(--body); }
.page { padding-inline: 16px; padding-block: 12px 24px; max-width: 1280px; margin: 0 auto; }
@media (min-width: 700px) { .page { padding-inline: 24px; } }
header { padding-block: 8px 12px; display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
h1 { margin: 0; font: 20px var(--display); letter-spacing: 1px; color: var(--accent); text-wrap: balance; }
h2 { margin: 0 0 10px; font: 11px var(--display); text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); }
.eyebrow { font: 10px var(--display); text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); }
.sub { margin: 0; color: var(--muted); }
.status { margin-left: auto; color: var(--muted); font-family: var(--mono); font-size: 12px; }
.status.err { color: var(--danger); }
main { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { main { grid-template-columns: 1fr; } }
.panel { background: var(--panel); border: 1px solid var(--edge); border-radius: 10px; padding: 16px; min-width: 0; }
#analysis, #play { grid-column: 1 / -1; }
h2 { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.assign button { font: 12px var(--body); padding: 3px 8px; }
.zones { display: grid; grid-template-columns: 1fr; gap: 18px; margin-top: 8px; }
.keyboard { max-width: 900px; }
.zone { min-width: 0; }
.zonehead { margin-top: 0; }
.octctl { white-space: nowrap; }
.dropzone { border: 2px dashed var(--edge); border-radius: 10px; padding: 24px 16px; text-align: center; transition: border-color .15s, background .15s; }
.dropzone.over { border-color: var(--accent); background: rgba(120,224,143,.06); }
.hint { color: var(--muted); font-size: 12px; margin-top: 6px; }
.link { color: var(--accent); cursor: pointer; text-decoration: underline; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
.row label { display: inline-flex; align-items: center; gap: 6px; }
.spacer { flex: 1; }
.muted { color: var(--muted); font-weight: normal; text-transform: none; letter-spacing: 0; font-family: var(--body); }
.num { font-family: var(--mono); }
button, select, input[type=number] { background: var(--panel2); color: var(--fg); border: 1px solid var(--edge); border-radius: 6px; padding: 6px 10px; font: inherit; cursor: pointer; }
button:hover { border-color: var(--accent); }
button:focus-visible, select:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.active { border-color: var(--accent); color: var(--accent); }
input[type=number] { width: 80px; cursor: text; font-family: var(--mono); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin-bottom: 12px; }
.card { background: var(--panel2); border: 1px solid var(--edge); border-radius: 8px; padding: 10px 12px; min-width: 0; }
.card .k { color: var(--muted); font: 10px var(--display); text-transform: uppercase; letter-spacing: 1.5px; }
.card .v { font: 500 18px var(--mono); margin-top: 4px; overflow-wrap: anywhere; }
.card .s { color: var(--muted); font-size: 12px; }
.card.good .v { color: var(--accent); }
.card.warn .v { color: var(--accent-2); }
.wave canvas { width: 100%; height: 220px; max-width: 100%; background: #0f1115; border-radius: 8px; border: 1px solid var(--edge); display: block; }
.legend { color: var(--muted); font-size: 12px; margin-top: 6px; }
.sw { display: inline-block; width: 18px; height: 3px; vertical-align: middle; margin: 0 6px 0 10px; }
.sw.orig { background: var(--orig); } .sw.res { background: var(--accent); }
details { margin-top: 10px; color: var(--muted); }
#macrosBox { margin-top: 0; color: inherit; }
#macrosBox summary { cursor: pointer; list-style: none; display: flex; align-items: baseline; gap: 8px; }
#macrosBox summary::-webkit-details-marker { display: none; }
#macrosBox summary::before { content: "▸"; color: var(--muted); font-size: 12px; }
#macrosBox[open] summary::before { content: "▾"; }
#macrosBox summary h2 { margin: 0; }
#macrosBox summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
#macrosBox > :not(summary) { margin-top: 10px; }
details ul { margin: 6px 0 0; padding-left: 18px; font-size: 12px; font-family: var(--mono); }
.scrollx { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 12.5px; }
th, td { text-align: right; padding: 3px 8px; border-bottom: 1px solid var(--edge); white-space: nowrap; }
th { color: var(--muted); font-weight: normal; font-size: 10px; text-transform: uppercase; letter-spacing: 1px; }
td:first-child, th:first-child { text-align: left; }
tr.loop td { background: rgba(120,224,143,.07); }
.layerhead { margin: 10px 0 4px; display: flex; gap: 10px; align-items: baseline; }
.layerhead .chan { font-weight: 600; text-transform: capitalize; }
.bar { display: inline-block; height: 10px; background: var(--accent); vertical-align: middle; border-radius: 2px; }
.keyboard { position: relative; height: 140px; margin-top: 12px; user-select: none; touch-action: none; }
.key { position: absolute; top: 0; border: 1px solid #0b0c0f; border-radius: 0 0 5px 5px; cursor: pointer; }
.key.white { background: var(--key); height: 140px; z-index: 1; }
.key.black { background: var(--key-black); height: 88px; z-index: 2; border-color: #000; }
.key.down.white { background: var(--accent); }
.key.down.black { background: #4c9f5c; }
.key span { position: absolute; bottom: 6px; left: 0; right: 0; text-align: center; font: 11px var(--mono); color: #5a6070; }
.key.black span { color: #9aa2b5; }
.key .cap { bottom: auto; top: 6px; font-size: 10px; color: #8a90a0; }
.key.white .cap { color: #7a8090; }
footer { color: var(--muted); font-size: 12px; padding-top: 16px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }